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Table 1 Inorganic and organic compositions of limonite from Aso Mountain.

From: Effect of Aso limonite on anaerobic digestion of waste sewage sludge

Compositions

Percentage % (g/kg)

Compositions

Percentage % (g/kg)

Iron—Fe2O3

6.908

Ash

7.480

Silica—SiO2

1.370

Aluminium—Al2O3

0.276

Water

1.380

Calcium—CaO

0.149

Sulphur—S

0.058

Carbohydrate

1.060

Magnesium—MgO

0.051

Potassium—K

0.020

Protein

0.060

Phosphorus—P

0.009

Manganese—Mn

0.003

Fat

0.010

Sodium—Na

0.002